William J. Kasper, MD
Pediatrics Physician · Neenah, WI
William J. Kasper, MD is a pediatrics physician with a practice address in Neenah, Wisconsin, and NPI 1093709891, issued on Sep 7, 2005. Check the license (Wisconsin 33517, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William J. Kasper
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 33517 WI
Self-reported in NPPES; status is on the state search - Practice location
- 740 Deerwood Ave, Neenah, WI 54956
- Phone
- (920) 751-9600
- Enumerated
- Sep 7, 2005
- Record last updated
- Sep 2, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 31830700 WI
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,203 in Wisconsin → Look up another NPI →
Also registered at 740 Deerwood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Gentile, MDPediatrics Physician1134185861
- Patricia Kasper, MDPediatrics Physician1104811686
- Jill Klein, NPNurse Practitioner1861826273
- Kim LederhausNurse Practitioner1245477801
- Kelly Meyer, DOPediatrics Physician1194709170
Verify William J. Kasper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 33517Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William J. Kasper among 1,203 pediatrics physician records in Wisconsin
William J. Kasper, MD is one of 1,203 pediatrics physician records with a practice address in Wisconsin. 20% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileNo · 20% of these records are
- In the CMS Doctors and Clinicians fileNo · 12% of these records are
- Record last updated2008 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 pediatrics physician records list a practice address in Neenah
They are 25 of the 919 NPPES records with a practice address in Neenah, and 1,203 pediatrics physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,203 in Wisconsin → Every provider in Neenah → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Kenneth Branstetter, M.D.Neenah, WI 549561427139575
- John Edwards, MDNeenah, WI 549561497787048
- Natalie Gehringer, MDNeenah, WI 549561639164130
- Kevin Gentile, MDNeenah, WI 549561134185861
- Peter Holzwarth, MDNeenah, WI 549561629001912
- Eileen Jekot, MDNeenah, WI 549561194733576
- Patricia Kasper, MDNeenah, WI 549561104811686
- Lynn Kohlmeier, M.D.Neenah, WI 549561528053626
Common questions
What is William J. Kasper, MD's NPI number?
William J. Kasper, MD's National Provider Identifier (NPI) is 1093709891, issued on Sep 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William J. Kasper, MD located?
The NPPES record lists a practice address at 740 Deerwood Ave, Neenah, WI, 54956. Phone: (920) 751-9600. Providers update this record themselves, so call before visiting.
How can I verify William J. Kasper, MD's license?
NPPES lists Wisconsin license number 33517, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.